From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0986C4707C for ; Wed, 10 Jan 2024 16:19:13 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5AB4B6B0075; Wed, 10 Jan 2024 11:19:13 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 55B726B00A4; Wed, 10 Jan 2024 11:19:13 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 423896B00A6; Wed, 10 Jan 2024 11:19:13 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 309FC6B0075 for ; Wed, 10 Jan 2024 11:19:13 -0500 (EST) Received: from smtpin21.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 0DD54A1A49 for ; Wed, 10 Jan 2024 16:19:13 +0000 (UTC) X-FDA: 81663910986.21.6320893 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by imf09.hostedemail.com (Postfix) with ESMTP id 3D7A2140005 for ; Wed, 10 Jan 2024 16:19:10 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=none; spf=pass (imf09.hostedemail.com: domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1704903551; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=oL5Xo63nbKJ2i7/s7fJ+kFca+w76VbJBfEafQEn4QVU=; b=VkVEQiXq+nC2D8dSTQv46Wn7vuvM4ZniWe0/bDWqBHA64HYub7qEmUKHMEiGumUiSEEQeX GuaVovLKI27MEihUfxDIJZPmptKqhWNZQ4WXaBbnoCrj2WxhxpCpoyCLC66HvB5SAcTTyW ds0GqK6WaqezWYaInWl2vN4Vkib6jP0= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=none; spf=pass (imf09.hostedemail.com: domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1704903551; a=rsa-sha256; cv=none; b=DdvH3WFSO//FUxWt5S5EMxgDu/KIAqWeHJp2T7wpuxiYtio5sjHSIudDCQCD+c7YWNQIWR HCNcWWM8h5PtuiV2av6gcgF0gYggqYyJ6rktrenXdkwg74w62aPAcPmVMnZZ0aGviFSbOF fUCGv0npcFFaF7GShS8vHCWv37ku+ls= Received: by verein.lst.de (Postfix, from userid 2407) id A18A568D07; Wed, 10 Jan 2024 17:19:07 +0100 (CET) Date: Wed, 10 Jan 2024 17:19:07 +0100 From: Christoph Hellwig To: Andrew Morton Cc: Christoph Hellwig , Matthew Wilcox , Hugh Dickins , Chandan Babu R , "Darrick J . Wong" , David Howells , Jarkko Sakkinen , Dave Hansen , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Christian Koenig , Huang Rui , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, x86@kernel.org, linux-sgx@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, keyrings@vger.kernel.org Subject: Re: disable large folios for shmem file used by xfs xfile Message-ID: <20240110161907.GA1388@lst.de> References: <20240110092109.1950011-1-hch@lst.de> <20240110073843.d663fa6610785a8611b2cebe@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240110073843.d663fa6610785a8611b2cebe@linux-foundation.org> User-Agent: Mutt/1.5.17 (2007-11-01) X-Rspamd-Queue-Id: 3D7A2140005 X-Rspam-User: X-Stat-Signature: ig7obdzt8d35ctfzzkchf8idxz75cd67 X-Rspamd-Server: rspam01 X-HE-Tag: 1704903550-36332 X-HE-Meta: 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 58weUKfq HvfMbOH39HxSpjo2E98WSNqPNMYghllbiuhECsSgvEuH45PE= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Jan 10, 2024 at 07:38:43AM -0800, Andrew Morton wrote: > I assume that kernels which contain 137db333b29186 ("xfs: teach xfile > to pass back direct-map pages to caller") want this, so a Fixes: that > and a cc:stable are appropriate? I think it needs to back all the way back to 3934e8ebb7c ("xfs: create a big array data structure") as that only clears the page sized chunk of a new allocation and could lead to corruption / or information leaks.